Power

Battery packs
Power 7–13
■ If you plan to leave the computer unattended during the
discharge, save your work before beginning the discharge
procedure.
■ If you use the computer occasionally during the discharge
procedure and have set energy-saving timeouts, expect
the following performance from your system during the
discharge process:
❏ The monitor will not turn off automatically.
❏ Hard drive speed will not decrease automatically while
the computer is idle.
❏ System-initiated standby will not occur.
To fully discharge a battery pack:
1. Right-click the Power Meter icon in the notification area, at
the far right of the taskbar, and then click Adjust Power
Properties.
– or –
Select Start > Control Panel > Performance and
Maintenance > Power Options > Power Schemes tab.
2. Record the 4 settings in the Running on batteries and
Plugged in columns so that you can reset them after the
calibration.
3. Set the 4 options to Never.
4. Select OK.
5. Unplug the computer from its external power source, but do
not turn off the computer.
6. Run the computer on battery power until the battery pack is
fully discharged. The battery light begins to blink in an amber
color when the battery pack has discharged to a low-battery
condition. When the battery pack is fully discharged, the
battery light is turned off and the computer shuts down.